Study on Determining the Composition of Ternary Complex (Al-CAS-CTMAB) with the Ratio of Double Peak Values at Double Wavelengths by UV Spectrophotometry
ZHANG Lin-lin, ZHENG Wen-zhi, LIN Jin-wei, ZENG Wei
Department of Light and Chemistry Engineering，Guangzhou University, Guangzhou 510091, China
Abstract：In the present paper，the composition of complex Al-CAS-CTMAB was studied with the ratio of double peak values at dual-wavelengths by UV spectrophotometry. First, the composition of complex of Al-CAS was determined in this method，Al∶CAS=1∶2. The absorption of ternary complex(Al-CAS-CTMAB) was determined with reference reagent of the complex Al-CAS. The ε values of Al-CAS and Al-CAS-CTMAB were determined with water reference. The composition of complex Al(CAS)n1(CTMAB)n2 was calculated with the formula: N=n1/n2=(ΔA2εMRλ1-ΔA1εMRλ2)/(ΔA2εRλ1-ΔA1εRλ2) CAS∶CTMAB=1∶1;Al∶CAS∶CTMAB=1∶2∶2. The calculated value and that obtained by traditional method are agreeable. The method is reliable for determining composition of ternary complexes.
Key words：Ratio of double peak values;Composition of ternary complex Al-CAS-CTMAB;Double wavelength spectrophotomentry
张霖霖,郑文芝,林锦威,曾 维. 双波长双峰值比光度法测定三元配合物组成比的研究——Al3+-CAS-CTMAB体系的组成比[J]. 光谱学与光谱分析, 2006, 26(03): 529-531.
ZHANG Lin-lin, ZHENG Wen-zhi, LIN Jin-wei, ZENG Wei. Study on Determining the Composition of Ternary Complex (Al-CAS-CTMAB) with the Ratio of Double Peak Values at Double Wavelengths by UV Spectrophotometry. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(03): 529-531.
